int CheckForULongOverflow()
{
switch (this.Kind)
{
case NumberKind.Real:
case NumberKind.Quad:
int status;
LLVMAPFloatRef apFloat = LLVMExt.APFloatFromAPFloat(APFloat, APFloatSemantics.IEEEquad, out status);
var comparisonMax = LLVMExt.APFloatCompare(apFloat, MaxULongValue);
var comparisonMin = LLVMExt.APFloatCompare(apFloat, MinULongValue);
LLVMExt.APFloatDispose(apFloat);
if (comparisonMax == 2)
{
return(1);
}
if (comparisonMin == 0)
{
return(-1);
}
return(0);
default:
throw new NotSupportedException();
}
}
public Number(ulong number, NumberKind numberKind)
{
this.Kind = numberKind;
if (numberKind.IsInteger())
{
var overflows = CheckForOverflow(number, numberKind);
if (overflows == 1)
{
this.State = NumberState.Overflow;
}
else if (overflows == -1)
{
this.State = NumberState.Underflow;
}
if (!HasErrors)
{
this.Value = LLVM.ConstInt(GetLLVMType(), number, new LLVMBool(0));
}
}
else
{
this.APFloat = LLVMExt.APFloatZero(GetAPFloatSemantics(this.Kind));
this.State |= (NumberState)LLVMExt.APFloatFromString(this.APFloat, number.ToString(CultureInfo.InvariantCulture), RoundingMode);
}
}
public Number(string number, NumberKind numberKind)
{
if (number == null)
{
throw new ArgumentNullException(nameof(number));
}
this.Kind = numberKind;
if (numberKind.IsInteger())
{
this.State = CheckIntegerString(number, numberKind);
if (!this.HasErrors)
{
this.Value = LLVM.ConstIntOfString(LLVM.Int128Type(), number, 10);
}
}
else
{
this.State = CheckFloatString(number);
if (!this.HasErrors)
{
this.APFloat = LLVMExt.APFloatZero(GetAPFloatSemantics(this.Kind));
this.State |= (NumberState)LLVMExt.APFloatFromString(this.APFloat, number, RoundingMode);
}
}
}
public Number(double number, NumberKind numberKind)
{
this.Kind = numberKind;
if (numberKind.IsInteger())
{
var overflows = CheckForOverflow(number, numberKind);
if (overflows == 1)
{
this.State = NumberState.Overflow;
}
else if (overflows == -1)
{
this.State = NumberState.Underflow;
}
if (!HasErrors)
{
this.Value = LLVM.ConstReal(LLVM.DoubleType(), number);
if (numberKind.IsSigned())
{
this.Value = LLVM.ConstFPToSI(this.Value, GetLLVMType());
}
else
{
this.Value = LLVM.ConstFPToUI(this.Value, GetLLVMType());
}
}
}
else
{
int state;
this.APFloat = LLVMExt.APFloatFromDouble(number, GetAPFloatSemantics(this.Kind), out state);
this.State |= (NumberState)state;
}
}
